Punching-machine.



No. 706,552. Patented Aug. l2, i902.

' B. F. HALL.

Puncnma mcnme. (Applicltion med Sept. 21, 1901. Renewed July 9, 1,902.)

3 Sheets-Shet l.

(No Model.)

LET

No. 706,552. l Patented Aug. l2, |902. BJF. HALL.

PUNCHING MACHINE.

(Applieation filed Sept. 21, 1901. Renewed July 9, 1992.

(No Model.) 3 Sheets-Sheet 2.

No. 706,552. 'rammed Aug. |'2, |902.

B. F. HALL. PUNCHING MACHINE.

(Application led Sept. 21, 1 f9`01. Renewed July 9, 1902.)

3 Sheets-Sheet 3.

(No Model.)

, UNITED STATESI PATENT OFFICE.

.BENJAMIN F.5I-IALL, OF SALEM, MASSACHUSETTS, NASSIAGQrNOR OF ONE-HALF TO ZINA GOODELL, OF SALEM, MASSACHUSETTS.

.PuNoHlNe-MACHINE.

SPECIFICATION forming part of Letters Patent No.\"/V'06,552, dated August 12, 1902. Application filed September 21, 1901. Renewed July 9, 1902. Serial No. 114,959. (No model.)

T all whom, t may concern:

Be it known thatV I, BENJAMIN F. HALL, a`

citizen of the United States,residing at Salem, in the county of Essex and State of Massachusetts,`have inventedcertain new and useful Improvements in Punching-Machines, of which the following is a specification. o

This invention relates toimprovements on the United States patent granted to me for 1o punching-machines September 17, 1901, No. 6S2,68G, and it is carried out as follows, reference being had to the'accompanying drawings, whereiny Figure 1 is a side elevation of the machine, showing the balance-wheeland cone-pulley removed. Fig. 2 is a horizontal section on the line 2 2 in Fig. 1. y Fig.'3 isavertical section on the line 3 3 in Fig. 2, showingthe adjustable feed mechanism. Fig. 4c is a vertizo cal section on the lined 4in Fig; 2. Fig. 5 is a planv View, partly in section, showing mechanism for operating the feed-point in a vertical direction. Fig. 6y is a similar view showing mechanism for Voperating the feedpoint in a horizontal direction. Fig. 7 is a front View of the die-holder and presser-foot, showing a portion of the latter, the work-su pporting plate, punch-plate, and feed-point in section. Fig. 8 is a side elevation of the arm 3o for adjusting the length'of the feed, and Fig.`

9 is a detail side elevation of the eccentricpin for vertically -adjusting the feed-point and its carrier. Similar letters refer to similar parts Wherover they occur on the different parts of the drawings. y

In the drawings, A represents the base por-V tion of the frame of the machine, and A is the gooseneck thereon, as usual. Y

B represents the work-supporting plate.

O is the rotary driving-shaft, journaled in bearings in the frame portion A and provided in one end with a cone-pulley D, to which a rotary motion is imparted by means of beltpower, as usual.

On the shaft C is an eccentric E, surrounded by a strap e, the rear"end of whichis pivotally connected to the lower end of a bellcrank lever F, pivoted at f to the rear upper 5o portion of the gooseneck A', like that shown and described in my aforesaid Letters Patent.

segment M by means of an cured to the rotary driving-shaft C and sur- The front end of the lever F is pivotally connectedto the upperend of the die-holder bar Gr, which is guided in bearings in the forward end ofthe gooseneck A,like that shown and described in my aforesaid Letters Patent.

H is the die, secured in a suitable manner to the lower end of the die-holderbar, as is common in devices of this kind.

The feed device for automatically and in- 6o termittently feeding the goods' to the die during the punching or perforating operation is `what is usually termed a four-motion posiltive feed and is consists ofa serrated segmental feed-point I, 65 `.secured to a feed-point which latter is pivot-ed `rear end of which is pivotally connected to a constructed as follows: It

carrier or lever K, at 7c to a link L, the

block Z, adjustable in a grooved segment M, which is hung at m on a stationary pivot. A 7o rocking motion is imparted t0 said grooved eccentric N, se-

rounded by a strap .NQ the forward end of which is pivotally connected at m' to the 75 grooved segment M, as shown.`

For the purpose of adjusting the length of feed I move the block l up or down within the grooved segment M, and suchfadjnstment I accomplish by means of a lever O, secured 8o to a spindle O', frictionally journaled in a bearing in the frame A and having secured to its inner end a lever O, the rear end of which i's-pivotally connected to alink O5, the upper end of which is pivotally connected to the link L or block Z, as shown in Figs. 2, 3,

4., 5, and 6. Integral with the adjusting-lever `O is made a `graduated segment O, by

Ameans of which the degree of the; feed can readily be ascertained.'

In machines of this kind it is necessary .to adjustthe'vertical movement of the ,feed-- point and its carrier relative to the thickness ofthe goods, and this I accomplishbythe following mechanisms On the driving-shaft C, I secure a cam'or eccentric ,P,- adaptedlto actuate a forked rocking lever Q, the-forward end of which is pivotally connected at it to the lower end of the feed-point carrier or lever K, as shown.y The said lever Q is hung roc upon an eccentric-pin R, the ends of which are frictionally journaled in bearings in the sides of the frame A, as shown. To the outer end of the pin R is secured a lever S, and by means of the latter the eccentric-pin R may be turned so as to raise or lower the fulsuitable gage, against which the edge of the work is guided during the punching operation, such gage being, however, not shown in they drawings, as it is a well-known feature in machines of this kind.

The operation of this my improved punchying or perforating machine is as follows: The l article to be perforated is placed upon the table BWith its edge against a suitable gage thereon, and after the presser-foot is raised it isallowed to drop onto the'article and be v held in `contact therewith by spring-pressure,

as usual. rlhe machineis then set in operation by imparting a rotary motionto the drivingshaft C, causing the die-holder bar and its die to be vertically reciprocated for the purpose'of punching kor perforating the article and causing the feed device to intermittently feed the said article the desired distance while the die is raised above the work, and so ou during the operation of the machine.

What I wish to secure by Letters Patent and claim is- 1. In a punching or perforating machine, in combination, a rotary driving-shaft and mechanism for imparting a reciprocating motion to a'die-carrier, a rocking feed-point and carrier, means for positively actuating and controlling the amount of feed of the latter, a rock-lever vactuated by a cam or eccentric on the rotary driving-shaft, and pivotally connected to the rocking feed-point carrier, said rock-lever being pivotally arranged upon. an adjustable eccentric-pin for the purpose of adjusting the vertical movement of the feedpoint carrier substantially as and for the purpose set forth.

2. In a punching or perforating machine, a four-motion positive and adjustable feed device, consisting in combination a rotary driving-shaft, an eccentric thereon, a pivoted vgrooved segment actuated by said eccentric,

a block adjustable in said segment, a rocking feed-point carrier, pivotally connected to said block, means for adjusting the latter in the segment, a rock-lever actuated by an eccentric on the driving-shaft and pivotally connected to the lfeed-point carrier, and an ad- BENJAMIN F. HALL.

Witnesses;

ALBAN ANDRN, LAURITZ N. MOLLER. 

